[GIT PULL] ARM: cache flushing LoUIS API

[Lorenzo Pieralisi]

On Thu, Sep 27, 2012 at 12:48:05PM +0100, Russell King - ARM Linux wrote:
> On Tue, Sep 25, 2012 at 01:57:58PM +0100, Lorenzo Pieralisi wrote:
> > Hi Russell,
> > 
> > I know it is coming quite late in the cycle but please consider pulling
> > the patch series implementing the new cache maintenance LoUIS API, since
> > it provides a stepping stone to implementing power management on upcoming
> > A15 and A7 based platforms, leaving functionality for earlier processor
> > versions unchanged.
> > 
> > It has been tested on:
> > 
> > - OMAP4/5
> >   # suspend/hotplug and CPU idle
> > - iMX6q
> >   # suspend and hotplug
> > - TC2 big.LITTLE testchip
> >   # CPU idle
> 
> Ok, last night's PXA build regressed with this:
> 
> arch/arm/mm/built-in.o: In function `xscale_dma_unmap_area':
> cache-xsc3l2.c:(.text+0x4194): undefined reference to `xscale_80200_A0_A1_flush_kern_cache_louis'
> 
> That's because we missed that proc-xscale.S aliases a bunch of functions to
> xscale_80200_A0_A1_xxx from xscale_xxx.  And looking at that, it seems that
> we also .type equivalent symbols - have you tested this on T2 builds to
> check whether it works correctly there?

Point taken for the regression, currently looking into that. I have not
run tests on T2, I would be surprised if the set triggers any issue on
T2 but I should have thought about that, my apologies.

I will test it ASAP and get back to you, sorry again.

Lorenzo